bit-manipulation 389. Find the Difference Given two strings s and t which consist of only lowercase letters.String t is generated by random shuffling string s and then add one more letter at a random position.Find the

bit-manipulation 201. Bitwise AND of Numbers Range Given a range [m, n] where 0 <= m <= n <= 2147483647, return the bitwise AND of all numbers in this range, inclusive.Example 1: Input: [5,7] Output: 4 Example 2: